US4414634A — Fluid flow totalizer

Claim 1

Independent Claim 155 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having a movable chart and a first marker to record thereon a first fluid pressure signal and a second marker to record thereon a second signal responsive to the fluid flow, and first and second motors to move the first and second markers, respectively, said data totalizer comprising, in combination: a first and a second linear variable displacement transformer each having an electrical output and a linearly displaceable element to vary the output; first and second connecting means connected to said first and second linearly displaceable transformer elements and adapted to be connected to the first and second motors, respectively; and electronic calculating means connected to the electrical outputs of said first and second transformers to utilize the fluid static pressure and fluid flow signals generated by the outputs of the first and second transformers, respectively, to calculate fluid flow rate.

Claim 2

Dependent Claim 155 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having a movable chart and a first marker to record thereon a first fluid pressure signal and a second marker to record thereon a second signal responsive to the fluid flow, and first and second motors to move the first and second markers, respectively, said data totalizer comprising, in combination: a first and a second linear variable displacement transformer each having an electrical output and a linearly displaceable element to vary the output; first and second connecting means connected to said first and second linearly displaceable transformer elements and adapted to be connected to the first and second motors, respectively; and electronic calculating means connected to the electrical outputs of said first and second transformers to utilize the fluid static pressure and fluid flow signals generated by the outputs of the first and second transformers, respectively, to calculate fluid flow rate.

Claim 3

Dependent Claim 34 words

A data totalizer as set forth in claim 1, including means to multiply together the outputs of said transformers to obtain a product, and electronic means to calculate the square root of the product.

Claim 4

Dependent Claim 32 words

A data totalizer as set forth in claim 2, including means to multiply the square root by an elapsed time signal to obtain an output indicating the cubic quantity of fluid flow.

Claim 5

Dependent Claim 45 words

A data totalizer as set forth in claim 1, wherein the chart recorder has adjustable linkage between said first and second motors and said first and second markers, respectively, and said first and second connecting means are adapted to be connected to said adjustable linkage.

Claim 6

Dependent Claim 59 words

A data totalizer as set forth in claim 4, wherein said adjustable linkage includes means to adjust the range of movement of said first and second markers, and said first and second connecting means are adapted to be connected to said adjustable linkage between the respective motor and marker at a point thereon subsequent to said range adjustment means.

Claim 7

Dependent Claim 59 words

A data totalizer as set forth in claim 5, wherein said adjustable linkage includes means to adjust the zero position of said first and second markers, respectively, and said first and second connecting means are adapted to be connected to said adjustable linkage between the respective motor and marker at a point thereon subsequent to said zero adjustment means.

Claim 8

Dependent Claim 54 words

A data totalizer as set forth in claim 1, wherein the chart recorder has first and second arcuately movable shafts carrying said first and second markers and movable by said first and second motors, respectively, and said first and second connecting means are adapted to be connected to said first and second shafts, respectively.

Claim 9

Dependent Claim 61 words

A data totalizer as set forth in claim 7, wherein said first and second connecting means include first and second arms adapted to be attached to said first and second shafts, respectively, and first and second links pivoted to said first and second arms approximately perpendicularly thereto and extending to the respective displaceable elements of said first and second transformers, respectively.

Claim 10

Dependent Claim 171 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having a movable chart and a first marker to record thereon a first fluid pressure signal and a second marker to record thereon a second signal responsive to the fluid flow, and first and second motors to move the first and second markers, respectively, said data totalizer comprising, in combination: first and second linear variable displacement transformers; an output winding and a movable core in each transformer; first and second means adapted to be connected to said first and second motors to move said first and second transformer cores in accordance with the static pressure and fluid flow, respectively, in a fluid flow line to establish first and second signals on the respective output winding in accordance with the static pressure and fluid flow; electrical means responsive to the outputs of said output windings to utilize said first and second signals to perform a fluid flow rate calculation; and means to intermittently energize said electrical calculating means.

Claim 11

Dependent Claim 171 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having a movable chart and a first marker to record thereon a first fluid pressure signal and a second marker to record thereon a second signal responsive to the fluid flow, and first and second motors to move the first and second markers, respectively, said data totalizer comprising, in combination: first and second linear variable displacement transformers; an output winding and a movable core in each transformer; first and second means adapted to be connected to said first and second motors to move said first and second transformer cores in accordance with the static pressure and fluid flow, respectively, in a fluid flow line to establish first and second signals on the respective output winding in accordance with the static pressure and fluid flow; electrical means responsive to the outputs of said output windings to utilize said first and second signals to perform a fluid flow rate calculation; and means to intermittently energize said electrical calculating means.

Claim 12

Dependent Claim 42 words

A data totalizer as set forth in claim 9, wherein said energization means includes a power supply, a clock operated from said power supply, and means for intermittently energizing said electrical calculating means from said power supply as controlled by said clock.

Claim 13

Dependent Claim 129 words

A data totalizer for use with a fluid flow chart recorder having static and differential pressure motors with linkage connected to move markers on a recording chart, comprising, in combination: adaptation means and electronic calculating means; said adaptation means including conversion means to convert from mechanical motion to an electrical signal, said conversion means including first and second electro-mechanical transducers having first and second movable elements, respectively, and each having an electrical output; said adaptation means including means adapted to mechanically connect said first and second movable elements to the chart recorder linkage; and said electronic calculating means having inputs connected to receive the electrical outputs of said transducers indicative of the static and differential pressures to perform an electronic calculation to determine the rate of flow of fluid.

Claim 14

Dependent Claim 129 words

A data totalizer for use with a fluid flow chart recorder having static and differential pressure motors with linkage connected to move markers on a recording chart, comprising, in combination: adaptation means and electronic calculating means; said adaptation means including conversion means to convert from mechanical motion to an electrical signal, said conversion means including first and second electro-mechanical transducers having first and second movable elements, respectively, and each having an electrical output; said adaptation means including means adapted to mechanically connect said first and second movable elements to the chart recorder linkage; and said electronic calculating means having inputs connected to receive the electrical outputs of said transducers indicative of the static and differential pressures to perform an electronic calculation to determine the rate of flow of fluid.

Claim 15

Dependent Claim 24 words

A data totalizer as set forth in claim 11, wherein said adaptation means includes means to permit mounting of said transducers in the recorder.

Claim 16

Dependent Claim 37 words

A data totalizer as set forth in claim 12, wherein said adaptation means includes a rigid mounting block adapted to be mounted in a fixed position inside the housing of the chart recorder for mounting said transducers.

Claim 17

Dependent Claim 60 words

A data totalizer as set forth in claim 12, wherein sid adaptation means includes first and second arms adapted to be connected to arcuately movable shafts carrying the markers in the chart recorder, and first and second threaded shafts substantially perpendicular to and connected to said first and second arms, to move said first and second transducer movable elements, respectively.

Claim 18

Dependent Claim 30 words

A data totalizer as set forth in claim 11, wherein said adaptation means includes a means to retrofit a plurality of chart recorders for electronic calculation of fluid flow rate.

Claim 19

Dependent Claim 29 words

A data totalizer as set forth in claim 11, wherein said adaptation means includes means to adjustably calibrate the position of said movable elements relative to the respective transducers.

Claim 20

Dependent Claim 25 words

A data totalizer as set forth in claim 16, wherein said adaptation means includes means to fix the adjusted calibrated position of said movable elements.

Claim 21

Dependent Claim 17 words

A data totalizer as set forth in claim 11, wherein said transducers are linear variable displacement transformers.

Claim 22

Dependent Claim 127 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having first and second motors to move first and second markers, respectively, of a fluid pressure signal and a fluid flow signal, said data totalizer comprising, in combination: a first and a second linear variable displacement transformer each having an electrical output and a linearly displaceable element to vary the output; first and second connecting means connected to said first and second transformer elements and adapted to be connected to the first and second motors, respectively; and electronic calculating means adapted to be connected to the electrical outputs of said first and second transformers indicative of the fluid pressure signal and the fluid flow signal, respectively, to perform a fluid flow rate calculation.

Claim 23

Dependent Claim 127 words

A data totalizer for use with a fluid flow chart recorder, said chart recorder having first and second motors to move first and second markers, respectively, of a fluid pressure signal and a fluid flow signal, said data totalizer comprising, in combination: a first and a second linear variable displacement transformer each having an electrical output and a linearly displaceable element to vary the output; first and second connecting means connected to said first and second transformer elements and adapted to be connected to the first and second motors, respectively; and electronic calculating means adapted to be connected to the electrical outputs of said first and second transformers indicative of the fluid pressure signal and the fluid flow signal, respectively, to perform a fluid flow rate calculation.

Claim 24

Dependent Claim 128 words

A data totalizer for use with a fluid flow chart recorder having static and differential pressure motors with linkage connected to move markers on a recording chart, comprising, in combination: conversion means to convert from mechanical motion to an electrical signal; said conversion means including first and second electro-mechanical transducers having respective first and second movable elements and each having an electrical output; adaptation means including means adapted to mechanically connect said first and second movable elements to the static and differential pressure motor linkage, respectively; and electronic calculating means having inputs adapted to be connected to receive the electrical outputs of said first and second transducers indicative of the static and differential pressures, respectively, to perform an electronic calculation to determine the rate of flow of fluid.

Claim 25

Dependent Claim 128 words

A data totalizer for use with a fluid flow chart recorder having static and differential pressure motors with linkage connected to move markers on a recording chart, comprising, in combination: conversion means to convert from mechanical motion to an electrical signal; said conversion means including first and second electro-mechanical transducers having respective first and second movable elements and each having an electrical output; adaptation means including means adapted to mechanically connect said first and second movable elements to the static and differential pressure motor linkage, respectively; and electronic calculating means having inputs adapted to be connected to receive the electrical outputs of said first and second transducers indicative of the static and differential pressures, respectively, to perform an electronic calculation to determine the rate of flow of fluid.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1986-11-07	1987-05-09	1987-11-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1990-11-07	1991-05-09	1991-11-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1994-11-07	1995-05-09	1995-11-08	$7700.00	Window Closed / Lapsed

Fluid flow totalizer

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag